At school, the girls receive the results of their last test; Nodoka is thrilled to have improved since last time, while Chiyu as usual aces it. Hinata however scores low and reveals she just can't get into studying as she is easily distracted. Suddenly, she realizes she was supposed to meet a friend and runs off. Hinata meets Eriko, who moved away when she was in Elementary School. Hinata begins telling Eriko about her new friends, but Eriko suddenly storms off. Hinata feels the they have grown apart and begins to worry about her friendship with Nodoka and Chiyu, so she decides to try and study harder. The girls offer to have a study sleepover to help Hinata, but Hinata still struggles to remain focused. However, Hinata receives a message from Eriko asking to meet up the following day. Hinata meets up with Eriko but they are interrupted by Shindoine and a MegaByogen. Eriko takes Hinata to safety leaving the other girls to fight the monster. While hiding, Eriko confesses to Hinata she became jealous when Hinata told her about her new friends but that she really wanted to see Hinata and tell her everything. The MegaByogen finds the two girls but they are rescued by Cure Grace. Cure Earth takes Eriko to safety so that Hinata can transform and help the others defeat the MegaByogen and purify the Tree Spirit. Afterwards, Hinata realizes her friendships will last and decides not to worry about losing her friends.